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| 人造卫星; 宇宙火箭 | |||
| 轨道器; 轨道飞行器 | |||
| English thesaurus | |||
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| OV | |||
| OV (Space) | |||
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orbital vehicle : 54 phrases in 5 subjects |
| Air defense | 1 |
| Aviation | 3 |
| Electronics | 8 |
| Space | 39 |
| United States | 3 |
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